19682165768 has 8 divisors (see below), whose sum is σ = 36904060830. Its totient is φ = 9841082880.

The previous prime is 19682165693. The next prime is 19682165773. The reversal of 19682165768 is 86756128691.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17748101284 + 1934064484 = 133222^2 + 43978^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1230135353 + ... + 1230135368.

Almost surely, 2^19682165768 is an apocalyptic number.

It is an amenable number.

19682165768 is a deficient number, since it is larger than the sum of its proper divisors (17221895062).

19682165768 is a wasteful number, since it uses less digits than its factorization.

19682165768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460270727 (or 2460270723 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 59.

The spelling of 19682165768 in words is "nineteen billion, six hundred eighty-two million, one hundred sixty-five thousand, seven hundred sixty-eight".